Green Valley was originally home to the Cabrogal people who spoke the Darug language. It was covered in eucalyptus forests and home to native animals such as wallabies and possums that were hunted by the Cabrogal for meat, hides and bones. When Governor Lachlan Macquarie established a town at nearby Liverpool in 1810, the surrounding areas were soon granted to British settlers who began clearing the forests for farmlands.[2]

A large area to the northwest of Liverpool was dubbed Green Valley. As well as the present-day suburb of Green Valley, it included what is now known as Ashcroft, Busby, Cartwright, Heckenberg, Miller, Sadleir and parts of Hinchinbrook and Mount Pritchard.[3]

One of the first settlers in the area was Peter Miller who gave his name to the nearby suburb of Miller. Another was Charles Scrivener who served as mayor of Liverpool and who oversaw the establishment of Green Valley School in 1882. When the first children began their classes, the school was nothing more than a large tent although a wooden building with an iron roof was constructed not long after  (Wikipedia)